Toshiba RAV-SM452MUT-E, RAV-SM562MUT-E 6-6. Tolerance of Pipe Length and Pipe Head

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6-6. Tolerance of Pipe Length and Pipe Head
nTwin system
Indoor unit B
Indoor unit A
Distributor
b
Branch pipe a Branch pipe
H
L
Main pipe
∆h
Outdoor unit
CAUTION
When planning a layout for Units A and B, comply with the following:
1. The lengths after branching (“a” and “b”) should be equal if feasible.
Install Units A and B so that the difference of the branching lengths becomes less than 10m if the lengths
cannot be equal due to the branch pipe position.
2. Install Units A and B on the same level.
If Units A and B cannot be installed on the same level, the difference in level should be limited to 0.5m or less.
3. Be certain to install Units A and B in the same room.
Units A and B cannot be operated independently each other.
Total length (L + a or L + b)
Pipe length Branch pipe length (a, b)
(one way) Maximum difference between indoor units
Refrigerant pipe (b – a, or a - b)
specification
Height
Between indoor units (∆ h)
Between indoor unit When outdoor unit heigher (H)
difference
and outdoor unit When outdoor unit lower (H)
Number of bent portions
50 m
15 m
10 m
0.5 m
30 m
30 m
10 m or less